CN2561772Y - Apparatus for producing tungsten carbide balls by plasma arc - Google Patents
Apparatus for producing tungsten carbide balls by plasma arc Download PDFInfo
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- CN2561772Y CN2561772Y CN02261882U CN02261882U CN2561772Y CN 2561772 Y CN2561772 Y CN 2561772Y CN 02261882 U CN02261882 U CN 02261882U CN 02261882 U CN02261882 U CN 02261882U CN 2561772 Y CN2561772 Y CN 2561772Y
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- tungsten carbide
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Abstract
The utility model discloses a device to use the plasma arc to generate the spherical tungsten carbide. The utility model mainly comprises five parts of a water-cooling furnace body (35), a plasma gun device (1), a rotating feeding device (27), a cooling disk system and a discharging system. The utility model has the advantages that: the process flow is simple, the operation is convenient, the products do not need to be broken by the electric grinders and other crushing equipments, the products which are discharged from a discharge outlet are the qualified products directly after the screening. The device can carry out the regulation of the particle sizes of the products, so the utility model can produce the spherical tungsten carbide products with the different sized according to the actual needs.
Description
Technical field
The utility model relates to the device of producing wolfram varbide, particularly produces the device of spherical tungsten carbide with plasma arcs.
Technical background
In numerous hard materials, tungstenic or be that the hard material of base is quite a lot with tungsten, wherein cast tungsten carbide be exactly a kind of application extremely wide be the hard material of base with tungsten.Adopt the method for built-up welding or spraying, base is covered working-surface easy to wear, it resistance to wears, and anticorrosive and antioxidant property significantly improves, and part life prolongs, and therefore, is widely used in each industrial circle.
The technology and the equipment of China's production cast tungsten carbide hard material are relatively backward, and its technology and equipment improve for a long time, and quality product improves few.
The method of traditional mode of production spherical cast tungsten carbide is to be loaded in the long and round graphite boat after tungsten powder, tungsten carbide powder and production process returns are mixed, the Dumpage type carbon tube resistor of putting into 2700～3000 ℃ of temperature carries out melting, and whole fusion process is grasped by visual inspection and manual operation by the operator entirely.Because with the whole process that eyes are observed furnace temperature and control melting, technological sciences are poor, operation is difficult to accurately grasp, thereby it is of poor quality to obtain cast tungsten carbide, and structure is very unstable.Each fused cast block does not have identical carbon amount and eutectic structure, also fused cast block is pulverized through equipment such as crusher, twin rollers, electronic mills simultaneously, and gradation sizing just can obtain required particle then, so its kernel productivity is lower, generally mostly is 60～70%.
Summary of the invention
The purpose of this utility model is to improve the technical process and the equipment of traditional mode of production cast tungsten carbide, and the device of simple, the easy to operate production spherical tungsten carbide of a kind of technology is provided.
Technical solution of the present utility model is achieved in that
The utility model mainly is made up of water-cooled body of heater (35), plasma gun apparatus (1), swivel feeding device (27), coolship (28), blanking storehouse (14), motoring valve (22), discharge port (23), water-cooling exhaust pipe (47) etc.On the wall of water-cooled body of heater (35) top, be provided with orienting sleeve I (9), plasma gun apparatus (1) is installed in orienting sleeve I (9), opposite side at water-cooled body of heater (35) top wall is welded with orienting sleeve II (26), and swivel feeding device (27) is installed in orienting sleeve II (26); Coolship (28) is installed in the cavities in water-cooled body of heater (35), revolving hollow spindle (24) is installed below this coolship (28), this revolving hollow spindle (24) links to each other with wheel casing (12) by belt pulley (21,11), vee-belt (10), and wheel casing (12) links to each other with buncher (13); The bottom of water-cooled body of heater is connected with blanking storehouse (14), motoring valve (22) is installed below this blanking storehouse, and this motoring valve (22) links to each other with discharge port (23); Blanking storehouse (14) has two at least.At the top of water-cooled body of heater (35) water-cooling exhaust pipe (47) is installed, venting port (46) is left at this vapor pipe (47) top; Be provided with several flow deflectors (39) between the inside and outside wall of water-cooled body of heater; Be provided with into water interface (37) on the outside wall surface of water-cooled body of heater (35) bottom, top is provided with water outlet interface (42), also establishes inlet mouth (38) on the wall of water-cooled body of heater (35) bottom; Outside wall surface at water-cooling exhaust pipe (47) is provided with into water interface (43) and water outlet interface (45).
Plasma gun apparatus (1) mainly is made up of plasma gun (2), electric motor (8), step-down gear (7) and conical gear (5) and elevating screw (3), feed screw nut (4); Insulation orienting sleeve (41) is installed between plasma gun apparatus (1) and the orienting sleeve I (9), web plate (6) is installed on the plasma gun (2), this web plate (6) links with tail rod with orienting sleeve I (9) by insulation orienting sleeve (41), and the other end of web plate (6) is fixedlyed connected with feed screw nut (4); In the below of orienting sleeve I (9), the outside of water-cooled body of heater (35) support (15) is installed, the conical gear (5) and the elevating screw (3) of electric motor (8), step-down gear (7) and a pair of interlock mutually are installed on this support (15), feed screw nut (4) is installed on elevating screw (3).
Swivel feeding device (27) mainly is made up of buncher (29), step-down gear (30), screw feeder (31), load hopper (32) and water cooled electrode (33), water-cooled cable (34); Water cooled electrode (33) is installed on the outer wall of screw feeder (31), be provided with cooling-water duct (36) between this water cooled electrode (33) and the screw feeder (31), these cooling-water duct (36) one sides link to each other with cooling water inlet pipe (38), opposite side links to each other with cooling rising pipe (51), between water cooled electrode (33) and the orienting sleeve II (26) insulating mat (40) is installed, water cooled electrode (33) is fixedlyed connected with orienting sleeve II (26) by insulating mat (40), and water cooled electrode (33) is connected with water-cooled cable (34); The top of screw feeder (31) is equipped with hopper (32), the rear end of screw feeder (31) is connected with step-down gear (30) with buncher (29), be installed with support (25) in the below of orienting sleeve II (26), the outside of water-cooled body of heater (35), hopper (32), step-down gear (30) are fixedly linked with support (25).
Coolship (28) is the cavity right cylinder, and its upper surface is a concave curvatures.In the revolving hollow spindle (24) below the coolship (28) water-cooled tube (16) is installed, between revolving hollow spindle (24) and water-cooled tube (16), be provided with cooling water channel (49), this cooling water channel (49) lower end is provided with water port (50), the cooling that circulates in water port (50) drains into tank (56) of its water coolant.Taper is installed on the outer wall of water-cooled tube (16) adjusts nut (17).On revolving hollow spindle (24) bottom outer wall, set nut (18) is installed.
Revolving hollow spindle (24) is fixing by 2～4 bearings (19) and bearing support (53).Body of heater (35) inner and outer wall can be selected the NULL manufacturing for use.
The utility model adopts the form of direct current arc smelting furnace, with plasma gun as negative electrode, with the melting material is anode, and plasma body is with very high speed directive heating object, when between the negative electrode of arc discharge or divergent bundle is with heating object, voltage being arranged, promptly when heating object was anode, plasma body between the two formed plasma jet.Since in little cross section, there is very big electric current to pass through, so the power density of plasma jet is very big, temperature very high (can reach more than 10000 ℃).Be enough to tungsten, wolfram varbide, returns and carbon black dissolved at short notice by the compound of the carbon content of cast tungsten carbide eutectic point preparation and be metal liquid.Its liquid cools off fast by the concave curved surface coolship of high speed rotating, regulates the rotating speed of controlled chilling dish, can obtain the particle diameter that needs.
The beneficial effects of the utility model are:
1. technical process is simple, and is easy to operate, and product does not need through disintegrating apparatus fragmentations such as electronic mills again, come out after screening from discharge port, and directly be qualified product.
2. can regulate the particle diameter size of product owing to this device, thereby can produce the spherical tungsten carbide product of different size according to actual needs.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of Fig. 1 ionic medium body gun apparatus (1).
Fig. 3 is the structural representation of swivel feeding device (27) among Fig. 1.
Fig. 4 is water-cooled body of heater (35) lower part structural representation among Fig. 1.
Among Fig. 1,1. plasma gun apparatus, 9. orienting sleeve I, 39. flow deflectors, 38. inlet mouth, 37. water inlet interfaces, 14. blanking storehouses, 28. coolships, 24. revolving hollow spindle, 21. belt pulleys, 10. vee-belt, 11. belt pulleys, 12. wheel casing, 13. bunchers, 22. motoring valves, 23. discharge ports, 27. the swivel feeding device, 26. orienting sleeve II, 35. water-cooled bodies of heater, 47. water-cooling exhaust pipes, 46. venting port, 45. water outlet interfaces, 43. water inlet interfaces, 42. water outlet interfaces, 55 vision slits.
Among Fig. 2,9. orienting sleeve I, 2. plasma gun, 3. elevating screw, 4. feed screw nut, 5. conical gear, 6. web plate, 7. step-down gear, 8. electric motor, 15. supports, 41. insulation orienting sleeves, 48. water-cooled cables.
Among Fig. 3,26. orienting sleeve II, 29. bunchers, 30. step-down gears, 31. screw feeders, 32. load hoppers, 33. water cooled electrodes, 34. water-cooled cables, 36. cooling-water ducts, 38. cooling water inlet pipes, 51. cooling rising pipes, 52. flanges, 40. insulating mats, 25. supports.
Embodiment:
The utility model single unit system as shown in Figure 1.It mainly (mainly comprises coolship 28, revolving hollow spindle 24, water inlet pipe 16, belt pulley 11,21, vee-belt 10 by water-cooled body of heater 35, plasma gun apparatus 1, swivel feeding device 27 and coolship system, wheel casing 12, buncher 13 etc.) and discharge system five parts such as (comprising blanking storehouse 14, motoring valve 22, discharge port 23) composition.On water-cooled body of heater 35 top walls, be provided with orienting sleeve I9, plasma gun apparatus 1 is installed in orienting sleeve I9, be welded with fixed guide cover II26, in fixed guide cover II26, swivel feeding device 27 is installed at the opposite side of water-cooled body of heater 35 top walls.Coolship 28 is installed in the cavities in water-cooled body of heater 35, revolving hollow spindle 24 is installed below this coolship 28, this revolving hollow spindle 24 is by belt pulley 21,11, and vee-belt 10 links to each other with wheel casing 12, and wheel casing 12 links to each other with buncher 13.The bottom of water-cooled body of heater is connected with blanking storehouse 14, motoring valve 22 is installed below this blanking storehouse, and this motoring valve 22 links to each other with discharge port 23; Blanking storehouse 14 has two at least.At the top of water-cooled body of heater 35 water-cooling exhaust pipe 47 is installed, venting port 46 is left at these vapor pipe 47 tops.Be provided with several flow deflectors 39 between the inside and outside wall of water-cooled body of heater; Be provided with into water interface 37 on water-cooled body of heater 35 bottom outside wall surface, top is provided with water outlet interface 42, also establishes inlet mouth 38 on the wall of water-cooled body of heater bottom; Outside wall surface at water-cooling exhaust pipe 47 is provided with into water interface 43 and water outlet interface 45.
The furnace wall of water-cooled body of heater 35 is to be fed from water inlet pipe 37 by water coolant, through flow deflector 39, carries out spiral and rises to rising pipe 42 and circulate and refrigerative.The inner and outer wall of water-cooled body of heater 35 adopts the NULL manufacturing.The upper of furnace body sidewall is provided with vision slit 55.
Plasma gun apparatus 1 as depicted in figs. 1 and 2.It mainly is made up of plasma gun 2, electric motor 8, step-down gear 7, conical gear 5, elevating screw 3, feed screw nut 4 and web plate 6 etc.Insulation orienting sleeve 41 is installed between plasma gun apparatus 1 and the orienting sleeve I9, be installed with web plate 6 on the plasma gun 2, this web plate links with tail rod with orienting sleeve I9 by insulation orienting sleeve 41, and the other end of web plate 6 is fixedlyed connected with feed screw nut 4.Below orienting sleeve I9, the outside of water-cooled body of heater 35 is equipped with support 15, and the conical gear 5 and the elevating screw 3 of electric motor 8, step-down gear 7 and a pair of interlock mutually is installed on this support 15, and feed screw nut 4 is installed on elevating screw 3.Plasma gun 2 links to each other with water-cooled cable 48.
In fusion process, the length of plasma arcs by plasma gun 2 in the upper and lower mobile realization of orienting sleeve I9.Specific operation process is: the conical gear 5 by electric motor 8, step-down gear 7, a pair of mutual interlock drives elevating screw 3 rotations, by moving of feed screw nut 4, drives plasma gun 2 and rises or descend in orienting sleeve 9 inside.
Swivel feeding device 27 as shown in figures 1 and 3.It mainly is made up of buncher 29, step-down gear 30, screw feeder 31, load hopper 32 and water cooled electrode 33, water-cooled cable 34 etc.Water cooled electrode 33 is installed on the outer wall of screw feeder 31, is provided with cooling-water duct 36 between this water cooled electrode 33 and the screw feeder 31, these cooling-water duct 36 1 sides link to each other with cooling water inlet pipe 38, and opposite side links to each other with cooling rising pipe 51.Between water cooled electrode 33 and the fixed guide cover II26 insulating mat 40 is installed, water cooled electrode 33 is fixedlyed connected with fixed guide cover II26 by insulating mat 40, and water cooled electrode 33 is connected with water-cooled cable 34.The top of screw feeder 31 is equipped with hopper 32, and the rear end of screw feeder 31 is connected with step-down gear 30 with buncher 29, below orienting sleeve II26, the outside of water-cooled body of heater 35 is installed with support 25.Hopper 32, step-down gear 30 are fixedly linked with support 25.
The type of drive of screw feeder 31 is, motor 29, step-down gear 30, links through two flanges 52, drives material feeder 31 rotations and realizes feed before the screws.
Water cooled electrode 33 is directly conducted electricity with direct supply and water-cooled cable 34.The barrel of water cooled electrode 33 and screw feeder 31 is formed for the copper steel complex form, and steel in the promptly outer copper is provided with cooling-water duct 36 in the middle of it.
The coolship system as shown in Figure 1 and Figure 4.It mainly is made up of coolship 28, revolving hollow spindle 24, water-cooled tube 16, cooling water channel 49, locating sleeve 20, bearing 19, bearing support 53 etc.Coolship 28 is the cavity right cylinder, and its upper surface is a concave curvatures.Revolving hollow spindle 24 is installed below the coolship 28, water-cooled tube 16 is installed in the tubular shaft 24, be provided with cooling water channel 49 between revolving hollow spindle 24 and water-cooled tube 16, these cooling water channel 49 lower ends are provided with water port 50, the cooling that circulates in water port 50 drains into tank 56 of its water coolant.Water-cooled tube 16, fixing by gusset plate 54.Taper also is installed on the outer wall of water-cooled tube 16 lower ends adjusts nut 17, be used to adjust the gap size of cooling water channel 49 lower ends, thus the size and the pressure of control recirculation water.In addition, also can control the size of its flooding quantity by under meter at the direct connection traffic meter of the front end of water inlet pipe 16.The flow of water generally is controlled at 5～8m
3/ h, pressure is at 0.15～0.3Mpa.Tubular shaft 24 is fastening by set nut 18.The rising of concave curved surface coolship 28 or decline can realize by set nut 18.
The rotation of concave curved surface coolship 28 is supported and is realized by buncher 13, wheel casing 12, belt pulley 11, three cuticles 10, belt pulley 21, bearing 19, locating sleeve 20, revolving hollow spindle 24, bearing support 53, set nut 18, and its velocity magnitude can realize by the rotating speed of regulating buncher 13.Bearing and bearing support can be designed to 2～4 according to actual needs.
Discharge system as shown in Figure 1 and Figure 4.Mainly by two cover discharging systems, promptly blanking storehouse 14, motoring valve 22, discharge port 23 are formed for it.Its discharge way is by discharge port 23 outside blowings by motoring valve 22 rotation regularly.
Principle of work of the present utility model and working process are as follows:
The compound that tungsten (W), wolfram varbide (WC), returns and carbon black (C) are prepared is together packed in the load hopper 32, via buncher 29, step-down gear 30, the exit of water cooled electrode 33 continuously pushed compound to by screw feeder 31, at this moment, by water-cooled cable 34 electric current is inputed to water cooled electrode.With the melting material is anode, forms negative electrode (heating object is an anode, and plasma gun is a negative electrode) with plasma gun 2 through water-cooled cable 48 received currents, and plasma body between the two forms plasma jet.The power density of its plasma jet is very big, and temperature is very high, can reach the temperature smelting zone more than 3000～6000 ℃.Its temperature survey can be adopted infrared rays noncontact method.
By screw feeder 31 through the compound of smelting zone through the instantaneous melting of high temperature, take place to decompose and inhale the carbon geochemistry reaction, form the eutectic (W of fused ditungsten carbide and wolfram varbide
2C-WC), because action of gravity, fused solution continuously drops onto on the high speed rotating concave curved surface coolship 28 of water-cooled and is cooled off fast, centrifugal force by circular concave curved surface coolship 28 high speed rotating, fused solution is dispersed into many very little liquid pearls, with tangential direction to around splash, and 35 cooling and crystallizations at a terrific speed through the water cooled furnace wall fall in the blanking storehouse 14 of body of heater below.The diameter of liquid pearl can be controlled by the speed of rotation that changes circular concave curved surface rotating disk 28.Whole fusion process feeds in stove at sealed state with by inlet pipe 38 under rare gas element (Ar) protection and carries out.The flow of rare gas element (Ar) generally is controlled at 7～10m
3/ h, pressure are 0.5～0.8Mpa, and the gas in its stove is discharged by furnace roof portion venting port 46.
Produce the output size of spherical tungsten carbide, can realize by the speed of rotation of buncher in the helixes feed equipment 27 29 and step-down gear 30.And the diameter of the spherical tungsten carbide of output, can be by the rotating speed of control joint buncher 13, wheel casing 12, the speed of rotation of controlling concave curved surface coolship 28 realizes that promptly rotating speed is fast, the particle diameter of output is just little, on the contrary particle diameter is just big.
Claims (10)
1. device of producing spherical tungsten carbide with plasma arcs, comprise plasma gun (2), it is characterized in that: on the wall of water-cooled body of heater (35) top, be provided with orienting sleeve I (9), plasma gun apparatus (1) is installed in orienting sleeve I (9), opposite side at water-cooled body of heater (35) top wall is welded with fixed guide cover II (26), and swivel feeding device (27) is installed in fixed guide cover II (26); Coolship (28) is installed in the cavities in water-cooled body of heater (35), revolving hollow spindle (24) is installed below this coolship (28), this revolving hollow spindle (24) links to each other with wheel casing (12) by belt pulley (21,11), vee-belt (10), and wheel casing (12) links to each other with buncher (13); The bottom of water-cooled body of heater is connected with blanking storehouse (14), motoring valve (22) is installed below this blanking storehouse, and this motoring valve (22) links to each other with discharge port (23); At the top of water-cooled body of heater (35) water-cooling exhaust pipe (47) is installed, venting port (46) is left at this vapor pipe (47) top; Be provided with several flow deflectors (39) between the inside and outside wall of water-cooled body of heater; Be provided with into water interface (37) on the outside wall surface of water-cooled body of heater (35) bottom, top is provided with water outlet interface (42), also establishes inlet mouth (38) on the wall of water-cooled body of heater (35) bottom; Outside wall surface at water-cooling exhaust pipe (47) is provided with into water interface (43) and water outlet interface (45).
2. the device of production spherical tungsten carbide according to claim 1 is characterized in that: plasma gun apparatus (1) mainly is made up of plasma gun (2), electric motor (8), step-down gear (7) and conical gear (5) and elevating screw (3), feed screw nut (4); Insulation orienting sleeve (41) is installed between plasma gun apparatus (1) and the orienting sleeve I (9), web plate (6) is installed on the plasma gun (2), this web plate (6) links with tail rod with orienting sleeve I (9) by insulation orienting sleeve (41), and the other end of web plate (6) is fixedlyed connected with feed screw nut (4); In the below of orienting sleeve I (9), the outside of water-cooled body of heater (35) support (15) is installed, the conical gear (5) and the elevating screw (3) of electric motor (8), step-down gear (7), a pair of phase interlock are installed on this support (15), feed screw nut (4) is installed on elevating screw (3).
3. the device of production spherical tungsten carbide according to claim 1 is characterized in that: swivel feeding device (27) mainly is made up of buncher (29), step-down gear (30), screw feeder (31), load hopper (32) and water cooled electrode (33), water-cooled cable (34); The outer wall of screw feeder (31) is provided with water cooled electrode (33), be provided with cooling-water duct (36) between this water cooled electrode (33) and the screw feeder (31), these cooling-water duct (36) one sides link to each other with cooling water inlet pipe (38), opposite side links to each other with cooling rising pipe (51), between water cooled electrode (33) and the orienting sleeve II (26) insulating mat (40) is installed, water cooled electrode (33) is fixedlyed connected with orienting sleeve II (26) by insulating mat (40), and water cooled electrode (33) is connected with water-cooled cable (34); The top of screw feeder (31) is equipped with hopper (32), the rear end of screw feeder (31) is connected with step-down gear (30) with buncher (29), be installed with support (25) in the below of orienting sleeve II (26), the outside of water-cooled body of heater (35), hopper (32), step-down gear (30) are fixedly linked with support (25).
4. the device of production spherical tungsten carbide according to claim 1 is characterized in that: coolship (28) is the cavity right cylinder, and its upper surface is a concave curvatures.
5. according to the device of claim 1 or 4 described production spherical tungsten carbides, it is characterized in that: in the revolving hollow spindle (24) below the coolship (28) water-cooled tube (16) is installed, be provided with cooling water channel (49) between revolving hollow spindle (24) and water-cooled tube (16), this cooling water channel (49) lower end is provided with water port (50).
6. the device of production spherical tungsten carbide according to claim 5 is characterized in that: revolving hollow spindle (24) is fixing by 2～4 bearings (19) and bearing support (53).
7. the device of production spherical tungsten carbide according to claim 5 is characterized in that: taper is installed on water-cooled tube (16) bottom outer wall adjusts nut (17).
8. the device of production spherical tungsten carbide according to claim 5 is characterized in that: on revolving hollow spindle (24) bottom outer wall set nut (18) is installed.
9. the device of production spherical tungsten carbide according to claim 5 is characterized in that: body of heater (35) inner and outer wall can be selected the NULL manufacturing for use.
10. the device of production spherical tungsten carbide according to claim 1 is characterized in that: blanking storehouse system has two at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02261882U CN2561772Y (en) | 2002-07-01 | 2002-07-01 | Apparatus for producing tungsten carbide balls by plasma arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02261882U CN2561772Y (en) | 2002-07-01 | 2002-07-01 | Apparatus for producing tungsten carbide balls by plasma arc |
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| Publication Number | Publication Date |
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| CN2561772Y true CN2561772Y (en) | 2003-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN02261882U Expired - Fee Related CN2561772Y (en) | 2002-07-01 | 2002-07-01 | Apparatus for producing tungsten carbide balls by plasma arc |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115705A (en) * | 2016-06-27 | 2016-11-16 | 乌克兰巴顿焊接研究所 | A kind of infusibility tungsten carbide wc+W2the preparation method of C spherical powder |
| CN114149263A (en) * | 2021-11-02 | 2022-03-08 | 广东省科学院新材料研究所 | Spherical casting tungsten carbide powder and preparation method thereof |
| CN114506846A (en) * | 2022-02-15 | 2022-05-17 | 厦门金鹭特种合金有限公司 | Production method and production device of superfine carbide |
-
2002
- 2002-07-01 CN CN02261882U patent/CN2561772Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115705A (en) * | 2016-06-27 | 2016-11-16 | 乌克兰巴顿焊接研究所 | A kind of infusibility tungsten carbide wc+W2the preparation method of C spherical powder |
| CN106115705B (en) * | 2016-06-27 | 2018-05-25 | 乌克兰巴顿焊接研究所 | A kind of infusibility tungsten carbide wc+W2The preparation method of C spherical powders |
| CN114149263A (en) * | 2021-11-02 | 2022-03-08 | 广东省科学院新材料研究所 | Spherical casting tungsten carbide powder and preparation method thereof |
| CN114149263B (en) * | 2021-11-02 | 2023-04-07 | 广东省科学院新材料研究所 | Spherical casting tungsten carbide powder and preparation method thereof |
| CN114506846A (en) * | 2022-02-15 | 2022-05-17 | 厦门金鹭特种合金有限公司 | Production method and production device of superfine carbide |
| CN114506846B (en) * | 2022-02-15 | 2023-06-06 | 厦门金鹭特种合金有限公司 | Production method and production device of superfine carbide |
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